Supplemental Material for Primary Posttraumatic Stress Disorder Increases Sensitivity to Long Term Losses among Patients with Major Depressive Disorder

Barrat Impulsiveness Scale 11 (BIS-11). The BIS-11 is a widely used measure of self-reported impulsivity, with higher scores reflecting greater impulsivity. In addition to an overall measure, the BIS provides three factors assessing different forms of impulsivity. Attentional Impulsivity reflects the difficulty focusing on the task at hand and experiencing racing or intrusive thoughts. Motor Impulsivity consists of actions taken without forethought and a lack of perseverance or inconsistent lifestyle. Non-planning Impulsivity is characterized by difficulties in planning and ordered thinking, along with discomfort with complex mental tasks. Flinders Decision-Making Questionnaire (FDMQ). The FDMQ provides data on four different qualities of decision-making. Vigilance is considered a healthy, rational decision-making style, in which goals are clarified, data gathered and alternatives considered carefully. Hypervigilance reflects frantic efforts to solve problems, due to a sense of time pressure or impulsivity. Buck-passing reflects a form of avoidance in decision-making manifested by deferring to others and avoidance of responsibility. Procrastination is another form of decision-making avoidance characterized by delay and passive neglect of issues requiring choices.